AU644956B2 - Digital cellular switching system with means for securing uninterrupted data transparency during handoffs - Google Patents
Digital cellular switching system with means for securing uninterrupted data transparency during handoffsInfo
- Publication number
- AU644956B2 AU644956B2 AU15010/92A AU1501092A AU644956B2 AU 644956 B2 AU644956 B2 AU 644956B2 AU 15010/92 A AU15010/92 A AU 15010/92A AU 1501092 A AU1501092 A AU 1501092A AU 644956 B2 AU644956 B2 AU 644956B2
- Authority
- AU
- Australia
- Prior art keywords
- signal
- signals
- station
- timeslot
- adpcm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000001413 cellular effect Effects 0.000 title description 14
- 230000005540 biological transmission Effects 0.000 description 12
- 238000011084 recovery Methods 0.000 description 10
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013441 quality evaluation Methods 0.000 description 2
- LEELWLKZRKDMAS-UHFFFAOYSA-N 2-(2,4-dimethoxy-3-methylsulfanylphenyl)ethanamine Chemical compound COC1=CC=C(CCN)C(OC)=C1SC LEELWLKZRKDMAS-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000981595 Zoysia japonica Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000010267 cellular communication Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013479 data entry Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3112617A JP2679442B2 (ja) | 1991-04-17 | 1991-04-17 | ディジタル移動通信方式 |
JP3-112617 | 1991-04-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU1501092A AU1501092A (en) | 1992-10-22 |
AU644956B2 true AU644956B2 (en) | 1993-12-23 |
Family
ID=14591221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU15010/92A Ceased AU644956B2 (en) | 1991-04-17 | 1992-04-21 | Digital cellular switching system with means for securing uninterrupted data transparency during handoffs |
Country Status (7)
Country | Link |
---|---|
US (1) | US5323446A (fr) |
EP (1) | EP0509548B1 (fr) |
JP (1) | JP2679442B2 (fr) |
AU (1) | AU644956B2 (fr) |
CA (1) | CA2066529C (fr) |
DE (1) | DE69222345T2 (fr) |
ES (1) | ES2107477T3 (fr) |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5677942A (en) * | 1991-10-22 | 1997-10-14 | Mitel Corporation | Wireless interface |
SE469460B (sv) * | 1991-11-27 | 1993-07-05 | Televerket | Foerfarande och anordning foer terminalorienterad kvalitetsoevervakning i telekommunikationsnaet |
FI91345C (fi) * | 1992-06-24 | 1994-06-10 | Nokia Mobile Phones Ltd | Menetelmä kanavanvaihdon tehostamiseksi |
EP0589552B1 (fr) * | 1992-09-08 | 2002-10-23 | Sun Microsystems, Inc. | Méthode et appareil pour le maintien de la connection des noeuds dans un réseau local sans fil |
SE515362C2 (sv) * | 1992-10-16 | 2001-07-23 | Eritel Ab | Styrning av datakommunikation i nät med slutna användargrupper |
JP3187190B2 (ja) * | 1993-02-18 | 2001-07-11 | 株式会社東芝 | 移動無線通信システムとその基地局 |
US6393281B1 (en) * | 1993-03-26 | 2002-05-21 | At&T Wireless Services Inc | Seamless hand-off for air-to-ground systems |
US5649308A (en) * | 1993-04-12 | 1997-07-15 | Trw Inc. | Multiformat auto-handoff communications handset |
US5528583A (en) * | 1993-05-26 | 1996-06-18 | The Trustees Of Columbia University In The City Of New York | Method and apparatus for supporting mobile communications in mobile communications networks |
US5487065A (en) * | 1993-05-26 | 1996-01-23 | The Trustees Of Columbia University In The City Of New York | Method and apparatus for supporting mobile communications in asynchronous transfer mode based networks |
EP0626769B1 (fr) * | 1993-05-26 | 2000-02-02 | Nec Corporation | Synchronisation de réseau pour communication cellulaire AMRT utilisant les signaux des stations mobiles des cellules voisines |
CN1111472A (zh) * | 1993-07-02 | 1995-11-08 | 莫托罗拉公司 | 转接无线电话呼叫的方法和设备 |
JP2590692B2 (ja) * | 1993-07-14 | 1997-03-12 | 日本電気株式会社 | 移動通信における通話中チャネル切替方法およびシステム |
US5473668A (en) * | 1993-07-21 | 1995-12-05 | Nec Corporation | Digital cordless telephone system readily capable of setting up |
US5444766A (en) * | 1993-10-01 | 1995-08-22 | At&T Corp. | Mobile-synchronized handoff in a wireless communications system |
US5606575A (en) * | 1993-10-29 | 1997-02-25 | Airnet Communications Corporation | FFT-based channelizer and combiner employing residue-adder-implemented phase advance |
JP2629588B2 (ja) * | 1993-12-27 | 1997-07-09 | 日本電気株式会社 | 移動体通信システムにおける多重接続方式 |
CA2137385C (fr) * | 1994-01-03 | 2000-01-25 | Gary Len Griffith | Dispositif de commutation pour terminaux de communication sans fil connectes a un commutateur via un canal protocolaire numerique |
JP3138850B2 (ja) * | 1994-03-17 | 2001-02-26 | 富士通株式会社 | 移動端末装置 |
US5448569A (en) * | 1994-04-12 | 1995-09-05 | International Business Machines Corporation | Handoff monitoring in cellular communication networks using slow frequency hopping |
CA2191721C (fr) * | 1994-06-01 | 2003-05-20 | Ronald R. Carney | Station de base sans fil a large bande utilisant un bus a acces multiple a repartition dans le temps pour effectuer des connexions commutables avec des ressources modulateur/demodulateur |
GB2291313A (en) * | 1994-07-07 | 1996-01-17 | Plessey Telecomm | Cordless telecommunications handover |
GB2292286B (en) * | 1994-08-06 | 1998-09-09 | Motorola Inc | Radio communications device and method |
JPH0865728A (ja) * | 1994-08-24 | 1996-03-08 | Hitachi Ltd | 移動体通信ネットワークおよび呼制御方法 |
US6035197A (en) | 1994-12-29 | 2000-03-07 | Cellco Partnership | Method and system for providing a handoff from a CDMA cellular telephone system |
DE4447243B4 (de) * | 1994-12-30 | 2004-02-19 | Siemens Ag | Verfahren zur Verbindungssteuerung in Kommunikationssystemen mit drahtloser Signalübertragung |
US5612991A (en) * | 1995-03-31 | 1997-03-18 | Intel Corporation | Use of RSSI indication for improved data transmission over amps network |
US6073030A (en) * | 1995-02-13 | 2000-06-06 | Intel Corporation | Use of RSSI indication for improved data transmission over amps network |
US5592480A (en) * | 1995-03-13 | 1997-01-07 | Carney; Ronald R. | Wideband wireless basestation making use of time division multiple-access bus having selectable number of time slots and frame synchronization to support different modulation standards |
JP2713228B2 (ja) * | 1995-05-16 | 1998-02-16 | 日本電気株式会社 | 移動無線通信方法 |
US5930727A (en) * | 1995-07-21 | 1999-07-27 | Ericsson Inc. | Analog fax and modem requests in a D-AMPS multi-line terminal system |
US5884177A (en) * | 1995-10-25 | 1999-03-16 | Northern Telecom Limited | Cellular communication system and method providing improved handoff capability |
US5774809A (en) * | 1996-02-12 | 1998-06-30 | Nokia Mobile Phones Limited | Simplified mobile assisted handoff of signal between cells |
US6192039B1 (en) * | 1996-03-25 | 2001-02-20 | Yrp Mobile Telecommunications Key Technology Research Laboratories Co., Ltd. | Method for flow control, node and communication network employing the flow control |
US5784695A (en) * | 1996-05-14 | 1998-07-21 | Trw Inc. | Method and apparatus for handover control in a satellite based telecommunications system |
US5822313A (en) * | 1996-05-24 | 1998-10-13 | National Semiconductor Corporation | Seamless handover in a cordless TDMA system |
FR2750820B1 (fr) * | 1996-07-04 | 1999-04-02 | Alcatel Espace | Procede de commutation d'un canal d'un premier chemin de propagation vers un second chemin de propagation |
IT1284784B1 (it) * | 1996-09-09 | 1998-05-21 | Olivetti Telemedia Spa | Sistema e dispositivo multiprotocollo per lo scambio di informazioni. |
US6141555A (en) * | 1997-06-09 | 2000-10-31 | Nec Corporation | Cellular communication system, and mobile and base stations used in the same |
JP2933067B2 (ja) * | 1997-06-30 | 1999-08-09 | 日本電気株式会社 | Pdc通信制御装置 |
US6097772A (en) * | 1997-11-24 | 2000-08-01 | Ericsson Inc. | System and method for detecting speech transmissions in the presence of control signaling |
US6118772A (en) * | 1998-01-30 | 2000-09-12 | Alcatel Usa Sourcing L.P. | Wireline telephony on a cellular switch |
US6181943B1 (en) * | 1998-03-30 | 2001-01-30 | Lucent Technologies Inc. | Method and apparatus for inter-frequency hand-off in wireless communication systems |
DE19816935A1 (de) * | 1998-04-16 | 1999-11-11 | Siemens Ag | Dezentral gesteuertes Handover mobiler Endeinrichtungen |
JP3113650B2 (ja) * | 1998-06-12 | 2000-12-04 | 日本電信電話株式会社 | チェックパケットを用いた通信方式 |
US6393004B1 (en) | 1998-09-24 | 2002-05-21 | Nippon Telegraph And Telephone Corporation | Communication scheme using check packets for guaranteeing data packet order in communication media exchange during communication |
US7054635B1 (en) * | 1998-11-09 | 2006-05-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Cellular communications network and method for dynamically changing the size of a cell due to speech quality |
US6859444B1 (en) * | 1999-10-06 | 2005-02-22 | Utstarcom, Inc. | Method and apparatus for handover in TDMA mobile communications system |
JP2001156733A (ja) * | 1999-11-26 | 2001-06-08 | Nec Corp | 高速スロット割当方法及び方式 |
DE19960545A1 (de) * | 1999-12-15 | 2001-07-05 | Siemens Ag | Verfahren und Anordnung zur Übertragung von Daten und zur Bestimmung der Übertragungseigenschaften in einem Funk-Kommunikationssystem |
FI109639B (fi) * | 1999-12-22 | 2002-09-13 | Nokia Corp | Menetelmä salausluvun välittämiseksi tiedonsiirtojärjestelmässä ja tiedonsiirtojärjestelmä |
US6360099B1 (en) * | 2000-06-09 | 2002-03-19 | Motorola, Inc. | Reducing audio gaps during a communication network handoff |
DE10049412B4 (de) * | 2000-10-05 | 2004-07-15 | Siemens Ag | Verfahren zum Verbindungsaufbau in einem Telekommunikationsnetz |
US7492787B2 (en) * | 2002-03-29 | 2009-02-17 | Fujitsu Limited | Method, apparatus, and medium for migration across link technologies |
FR2849336B1 (fr) * | 2002-12-19 | 2005-04-15 | Siemens Transp Systems | Systeme de transmission radioelectrique d'information entre une infrastructure et des mobiles |
US20050070287A1 (en) * | 2003-09-26 | 2005-03-31 | Interdigital Technology Corporation | Method for soft/softer handover for wireless communication systems |
JP4389569B2 (ja) * | 2003-12-05 | 2009-12-24 | パナソニック株式会社 | 構内交換機 |
US8331941B2 (en) * | 2005-05-10 | 2012-12-11 | Alcatel Lucent | Method of providing messages to a mobile unit on a forward link |
CN102076111B (zh) * | 2009-11-24 | 2014-04-30 | 中兴通讯股份有限公司 | 一种提高通话性能的方法和基站控制器 |
US9167599B2 (en) * | 2010-09-22 | 2015-10-20 | Motorola Solutions, Inc. | Channel structure for non-contention based windows and contention based random access requests |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4989204A (en) * | 1988-02-10 | 1991-01-29 | Nec Corporation | High throughput communication method and system for a digital mobile station when crossing a zone boundary during a session |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3527330A1 (de) * | 1985-07-31 | 1987-02-05 | Philips Patentverwaltung | Digitales funkuebertragungssystem mit verbindungsbegleitenden organisationskanal im zeitmultiplexrahmen |
SE460449B (sv) * | 1988-02-29 | 1989-10-09 | Ericsson Telefon Ab L M | Cellindelat digitalt mobilradiosystem och foerfarande foer att oeverfoera information i ett digitalt cellindelat mobilradiosystem |
US5091942A (en) * | 1990-07-23 | 1992-02-25 | Ericsson Ge Mobile Communications Holding, Inc. | Authentication system for digital cellular communications |
US5175867A (en) * | 1991-03-15 | 1992-12-29 | Telefonaktiebolaget L M Ericsson | Neighbor-assisted handoff in a cellular communications system |
-
1991
- 1991-04-17 JP JP3112617A patent/JP2679442B2/ja not_active Expired - Fee Related
-
1992
- 1992-04-17 US US07/870,083 patent/US5323446A/en not_active Expired - Lifetime
- 1992-04-21 CA CA002066529A patent/CA2066529C/fr not_active Expired - Fee Related
- 1992-04-21 ES ES92106785T patent/ES2107477T3/es not_active Expired - Lifetime
- 1992-04-21 EP EP92106785A patent/EP0509548B1/fr not_active Expired - Lifetime
- 1992-04-21 AU AU15010/92A patent/AU644956B2/en not_active Ceased
- 1992-04-21 DE DE69222345T patent/DE69222345T2/de not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4989204A (en) * | 1988-02-10 | 1991-01-29 | Nec Corporation | High throughput communication method and system for a digital mobile station when crossing a zone boundary during a session |
Also Published As
Publication number | Publication date |
---|---|
DE69222345T2 (de) | 1998-03-19 |
ES2107477T3 (es) | 1997-12-01 |
US5323446A (en) | 1994-06-21 |
AU1501092A (en) | 1992-10-22 |
DE69222345D1 (de) | 1997-10-30 |
JP2679442B2 (ja) | 1997-11-19 |
EP0509548A2 (fr) | 1992-10-21 |
CA2066529A1 (fr) | 1992-10-18 |
JPH04317298A (ja) | 1992-11-09 |
EP0509548A3 (en) | 1993-06-30 |
CA2066529C (fr) | 1996-05-07 |
EP0509548B1 (fr) | 1997-09-24 |
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